I started playing Hearthstone during Blackrock Mountain and during that time the game was far more fun to play and far more popular with viewers than it is now. Obviously, age is a factor in the decline of any game’s popularity, but I feel like the biggest factor in Hearthstone’s case is that over the last couple years, the focus of the game has increasingly shifted away from tempo and the board, and toward value and the hand.
The most exciting aspect of Hearthstone, especially from a spectator’s perspective, is fighting for board control by trading minions. Considering that the board takes up about 95% of the screen, this is only natural. In earlier expansions, board battles were much more incremental, tempo swings were much smaller, and board advantage often went back and forth each turn.
At this point, games are much more often won by whichever player achieves a single blowout turn first. Regardless of power levels or play rates, cards like Conjurer’s Calling, Kangor’s Endless Army, Zul’Jin, King Phaoris, The Storm Bringer, Kalecgos, Tip the Scales, and Puzzle Box of Yogg Saron are “bombs” that often end the game on the spot regardless of who was ahead during the rest of the game leading up to that point. Luna’s Pocket Galaxy, while not a bomb itself, gives the person who plays it the ability to make any turn after it a “bomb” turn by playing 20+ mana worth of minions at a time. This is, of course, assuming that the match does not feature Control Warrior, which has the goal - and the ability - of making sure that there is never anything on the board to begin with.
Currently, the most successful strategies involve stalling and PREVENTING minion interactions on the board until you can either win the game in one turn with a single backbreaking card/combo or accrue an insurmountable amount of value in your hand. It has become extremely common nowadays for both players to have 7+ cards in hand and nothing on the board.
I know I’m not alone when I say that this is a lot less fun than the way the game used to be because Twitch numbers don’t lie and many of the most popular streamers who started playing other games never came back. I hope that eventually the developers realize how far Hearthstone has strayed from its roots and bring it back to the tempo-based, board-centric game it used to be.

